Mohammad Ajmal Shad, a top government meteorologist in Lahore, said Saturday that a three-day spell of rain will likely start Monday and break the smog that has been caused by dust, the burning of crops, industry and brick kilns.

Smog has caused poor visibility, leading to highway accidents. Police spokesman Mohammad Imran said movement on the motorways remains suspended in the morning due to 'zero' visibility. He said to avoid accidents traffic moves in escorted convoys during the day.